Flange Adapters and Reducers

Adapters allow for connecting different types of flanges. For example, KF to ISO, or CF to KF. Reducers allow to step up or down in size within the same type of flanges. Not to be confused with flange-to-fitting adapters which make a transition from a flange of a particular type - to an entirely different connection type.

Nor-Cal Products, Inc.

KF Flange Reducing Nipples

KF reducing nipples made from 304 stainless steel, both flanges and tube portion. 316 L available upon request.These KF reducers are designed to hold ultra-high vacuum, (UHV) with a metal seal, or a high vacuum, (HV) with an O-ring. In a typical application the O-ring is mounted on a centering ring aligning the flanges and holding the O-ring in place.

Vacuum range is > 1x10 E-11 Torr for ultra high vacuum, UHV with an EVAC metal seal. With an elastomer seal vacuum range is > 1x10 E-8 Torr, high vacuum, HV applications.

Tube O.D.LengthFlange 1Flange 2MaterialMfg. P/N.Encole P/N.Price
0.750 inch1.300 inchKF25KF16AISI 3042NR-NW-25-16180A1000$47.45each
0.750 inch1.300 inchKF40KF16AISI 3042NR-NW-40-16180A1001$69.65each
1.000 inch2.180 inchKF40KF25AISI 3042NR-NW-40-25180A1002$55.00each
0.750 inch1.300 inchKF50KF16AISI 3042NR-NW-50-16180A1003$61.35each
1.000 inch2.180 inchKF50KF25AISI 3042NR-NW-50-25180A1004$61.35each
1.500 inch2.550 inchKF50KF40AISI 3042NR-NW-50-40180A1005$61.35each
Nor-Cal Products, Inc.

ISO Reducer Nipples

ISO reducers made from 304 stainless steel. The tube is port-pulled and bead blasted for improved crevice-free surface finish.

Vacuum range is > 1x10 E-11 Torr for ultra high vacuum, UHV with an EVAC metal seal. With an elastomer seal vacuum range is > 1x10 E-8 Torr, high vacuum, HV applications.

Flange 1Flange 1 TypeFlange 2Flange 2 TypeTube O.D.MaterialMfg. P/N.Encole P/N.Price
ISO-80ISO Multi FastenerISO-63ISO Multi Fastener2.500 inchAISI 3042NR-ISO-80-63-OF207A1000$228.15each
ISO-100ISO Multi FastenerISO-63ISO Multi Fastener2.500 inchAISI 3042NR-ISO-100-63-OF207A1001$262.75each
ISO-100ISO Multi FastenerISO-80ISO Multi Fastener3.000 inchAISI 3042NR-ISO-100-80-OF207A1002$338.45each
ISO-160ISO Multi FastenerISO-63ISO Multi Fastener2.500 inchAISI 3042NR-ISO-160-63-OF207A1003$342.10each
ISO-160ISO Multi FastenerISO-80ISO Multi Fastener3.000 inchAISI 3042NR-ISO-160-80-OF207A1004$352.70each
ISO-160ISO Multi FastenerISO-100ISO Multi Fastener4.000 inchAISI 3042NR-ISO-160-100-OF207A1005$365.30each
ISO-200ISO Multi FastenerISO-100ISO Multi Fastener4.000 inchAISI 3042NR-ISO-200-100-OF207A1008$452.30each
ISO-200ISO Multi FastenerISO-160ISO Multi Fastener6.000 inchAISI 3042NR-ISO-200-160-OF207A1009$478.60each
ISO-250ISO Multi FastenerISO-63ISO Multi Fastener2.500 inchAISI 3042NR-ISO-250-63-OF207A1010$506.85each
ISO-250ISO Multi FastenerISO-80ISO Multi Fastener3.000 inchAISI 3042NR-ISO-250-80-OF207A1011$538.20each
ISO-250ISO Multi FastenerISO-100ISO Multi Fastener4.000 inchAISI 3042NR-ISO-250-100-OF207A1012$558.10each
Load more
Nor-Cal Products, Inc.

ISO to CF Flange Adapters

ISO to Conflat flange adapters connecting two dissimilar flanges in line of a pipe. Flanges and the tube are made from 304 Stainless Steel. The tube has a bead blast finish.

Vacuum range is > 1x10 E-8 Torr, high vacuum, HV applications.
Temperature range -20 degrees C to 150 degrees C.

Flange 1Flange 1 TypeFlange 2Flange 2 TypeTube O.D.MaterialMfg. P/N.Encole P/N.Price
4-1/2" (DN63)CF with Bolt HolesISO-63ISO Multi Fastener2.500 inchAISI 304AN-450-ISO-63-OF205A1000$245.00each
6" (DN100)CF with Bolt HolesISO-100ISO Multi Fastener4.000 inchAISI 304AN-600-ISO-100-OF205A1002$330.75each
8" (DN160)CF with Bolt HolesISO-160ISO Multi Fastener6.000 inchAISI 304AN-800-ISO-160-OF205A1003$440.80each
4-5/8" (DN80)CF with Bolt HolesISO-80ISO Multi Fastener3.000 inchAISI 304AN-462-ISO-80-OF205A1001$283.20each
10" (DN200)CF with Bolt HolesISO-200ISO Multi Fastener8.000 inchAISI 304AN-1000-ISO-200-OF205A1004$725.35each
Nor-Cal Products, Inc.

ISO to KF Flange Adapters

ISO to KF flange adapters made from 304 stainless steel. The tube is port-pulled and bead blasted for improved crevice-free surface finish. The ISO flange is universal multi-fastener type.

Vacuum range is > 1x10 E-8 Torr, high vacuum, HV applications.
Temperature range -20 degrees C to 150 degrees C.

Flange 1Flange 1 TypeFlange 2Flange 2 TypeTube O.D.MaterialMfg. P/N.Encole P/N.Price
KF16KFISO-63ISO Multi Fastener0.750 inchAISI 304AN-NW-16-ISO-63-OF206A1000$138.00each
KF25KFISO-80ISO Multi Fastener1.000 inchAISI 304AN-NW-25-ISO-80-OF206A1002$185.30each
KF40KFISO-100ISO Multi Fastener1.500 inchAISI 304AN-NW-40-ISO-100-OF206A1004$227.65each
KF50KFISO-160ISO Multi Fastener2.000 inchAISI 304AN-NW-50-ISO-160-OF206A1005$257.25each
KF25KFISO-63ISO Multi Fastener1.000 inchAISI 304AN-NW-25-ISO-63-OF206A1001$141.90each
KF25KFISO-100ISO Multi Fastener1.000 inchAISI 304AN-NW-25-ISO-100-OF206A1003$227.65each

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